Patent IT-1235544-B (IT)
Title: Double hinged right or left handed opening door
Inventor: NICOLA LADISA
IPC: E06B/
Filed: 1989-06-01
Granted: 1992-09-09
Abstract: The main purpose of our invention is to supply a door for cabinets, refrigerators or similar items in which the door can be open completely by either side of the front surface. The other purpose of our invention is to supply a door for buildings like banks, large warehouses and hospitals that is mounted on a pivot and can be opened from either side or direction.The ulterior purpose of our invention is to supply a door that, when open from one side, is blocked from the other, in order to avoid the door being open simultaneously from both sides of the surface. The other purpose of the invention will be obvious for the specialists in the field. The above mentioned purposes were for the met by using a door with many vertically sliding hinges that are vertically mounted inside the door, between the front and back sections. Each vertical part is situated in such a way to run up against a corresponding closing mechanism mounted on the door frame of a cabinet or a refrigerator, for example. In the joint between the vertical door and the part internally fixed to the door is a mobile horizontal part that extends the entire width of the door and is sufficient for the interlocking sequence of the vertical parts on the other side of the door. This occurs when it is open and then when it is close and then, again, when it is open from the other side. A mechanism, for example a handle, is attached to each external side and is used to open the door from the side opposite of that surface. The door structure for "the two-way opening door", is selectively able to be opened in both directions and automatically "pivots" to one side when the door is open. It has a lintel and a slab, which include: A. Two pair of vertically arranged elongated hinges that slide vertically, of which each has: 1. a terminal external part that has a shared blocking mechanism and 2. a terminal internal part that has a shared internal mechanism that works horizontally; B. One guide for each hinge C. An inclined mechanism that pushes each hinge towards the outside.D. An extended crossbar, arranged horizontally that slides in a horizontal direction with two shared blocking mechanisms in each terminal part. Both are arrange near one of the internal terminals that are block with these. E. A guide for the crossbar, and F. A pair of common mechanisms that are mounted on the lintel and a pair of shared mechanisms that are mounted on the slab. This is where a transversal force on the side of the door, with both of the shared blocking mechanisms, pushes it from that side toward the shared mechanisms and moves the hinges internally in order to: 1) block it by sliding the two shared blocking mechanisms of the crossbar that are placed nearby. 2) push the crossbar towards the other side 3) block it by sliding the remaining two shared blocking mechanisms of the hinges on the other side, 4) push the other hinges towards the exterior so that their shared blocking mechanisms enter into the shared mechanisms of the lintel and the slab and form a hinge for the door. The horizontally sliding bar can be described like a mechanism for transforming a pair of vertical movements towards the inside (for example, one towards the other) or a pair of external movements (for example, distancing one from the other) from the other side of the door. The length and the position of 4 hinges and of the crossbar must be carefully drawn. It is also appropriate to have an adjusting mechanism for each part after the installation of the door so that the position can be fixed with precision. This is so that nothing comes into contact with the crossbar or between the 4 vertical parts when two sides are pushed simultaneously, otherwise all 4 hinges move will not be able to move inside their slab and allow all the doors to be moved from their fixed position. This safety measure comes from drawing the length of the crossbar too large because then all 4 of the hinges slide completely internally entering the lintel and the slab on the opening side of the door. An external handle is necessar